Please open a bug report. You do not need to include the path to the spam comments or pages if they were left in the last few days.

Anyway, spammers have little or nothing to gain, since links within comments and wiki pages are marked as nofollow.

Most likely, the wiki is the correct place. In particular, there is an examples page.

Assuming you have already downloaded GNU Smalltalk and tried it out a little, you can join the GNU Smalltalk mailing list. That's the primary means to share your experience about GNU Smalltalk, or otherwise assist the GNU Smalltalk project with your development skills.